US PATENT SUBCLASS 505 / 500
.~ Heating, annealing, or sintering

Current as of: June, 1999
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505 /   HD   SUPERCONDUCTOR TECHNOLOGY: APPARATUS, MATERIAL, PROCESS

300  DF  PROCESSES OF PRODUCING OR TREATING HIGH TEMPERATURE (Tc GREATER THAN 30 K) SUPERCONDUCTOR MATERIAL OR SUPERCONDUCTOR CONTAINING PRODUCTS OR PRECURSORS THEREOF {24}
500.~ Heating, annealing, or sintering {1}
501  DF  .~.~> Bismuth (Bi) or thallium (Tl) containing

DEFINITION

Classification: 505/500

Heating, annealing, or sintering:

(under subclass 300) Process that includes a step of heating, annealing, or surface melting of particulate material by positive application of heat with uniting through contiguous surface phase and retention of some particulate identity.

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450, for melting operations that exclude sintering or calcining.

490, for sintering operations that involve the combination of surface melting and shaping or consolidating.

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264, Plastic and Nonmetallic Article Shaping or Treating: Processes, particularly

603+, for vitrifying or sintering of shaped particulate bodies, subclasses 84+ for process of shaping or treating using explosive force, subclasses 104+ for forming electrical articles by shaping electroconductive material, and subclasses 109+ for consolidating to shape particulate material.